Liquid-fuel burner



Dec. 11, 1928. 1,695,215

E. I. STAPLES LIQUID FUEL BURNER Filed April 23, 1923 Earle I 65 17265,

ATTORN Y- Patented Dec. 11,- 1928...

UNITED. STATES" am]: I. sruLEsornEw Yozax, 1w; 1

mourn-rum. BURNER.

' Application med April as,

This invention relates to mechanical oil burners and has for its primary object the provision of a burner structure which is 'associated with a furnace front in a manner a which will cause efiectiveconfinement of the heat within the furnace and hold the heat against undue escape to the fire box opening and from the stack. A

A further object of the invention resides in 10 a construction of this character wherein all parts thereof are adjustable from outside of the furnace.

Another object of the invention is to provide a burner associated with novel means whereby quick access may be had to the fur nace.

A A still further object of the invention is'to provide means which will readily ada t the burner to furnaces of respective y di' erent types.

A still further object of the invention is to provide a mechanical burner havin means adapted to be secured'to a furnace ont in line with the fire box opening and which will include a mechanism for readily effecting a forced draft and which said mechanism is adjustable from a point outside the furnace.

With these and other objects in view, the invention resides in certain novel construction and combination and arrangement'of parts, the essential features of which are hereinafter full described, are particularly ointed out in t e appended claim, and are il ustrated in the accompanying drawing, in which 5 tion of a furnace showing my improved front means and the manner of associating a burner with said means, the arrangement being adapted to a Scotch boiler.

Figure 2 is a similar view showing a slightly modified application of the structure.

Fi re 3 is a front view thereof, the furnace eing omitted.

Figure 4 is a perspective view of the front 45 furnace. a

The invention is characterized by a burner structure 10 which includes a yoke 11 which accommodates a nipple 16 adapted to be connected in any suitable well-known manner 50 with a liquid fuel supply source, not shown. A fuel pipe (not shown) is in communication with the nipple and has a nozzle at itsfree end which-is controlled by a stem having a hand wheel 36 at its outer end. 66 A guide and air feeding pipe or equivalent Figure 1 is a vertical section through a por- 1923.- Serial No. 634,191.

means 39 is threadedly connected. onelof its ends with thelyoke 11 and freely surrounds the fuel pipe of the burner structure pipe 39 is approximately coextensive with the fuel pipe and terminates atJzhe tip of the burner structure. It also passes through. a= hub 40in a spider 41 of asupporting means as clearly shown in Figufe 4 and it isobsei'ved thatthe spider 41' is secured within an open ended cylindrical extension 42 which is hinged at 43 to a front flange'44 and adapted to be clamped with respect thereto by pivotally supported clamping bolts 45' carried by the flange 44 and-co-acting with bifurcated lugs 46 on said extension 42. Theflo front flange 44 is provided with an" asbestos packing ring 47 against which the inner end of the extension 42 bears. The front flange 44 is associated with a plate 48 secured at 49 to the brick arch 50 of the furnace structure 51 at one side of the fire box opening 52. Intel-posed between the plate 48 and the flange ,44 is an asbestos packing 53. From this construction it is observed that the annular extension- 42 may be effectively mounted on furnaces of various well-known types. It will subsequently be observed that the extension 42 and its spider 41 constitute mounting for my damper mechanism to be referred tohereinafter.

As stated, the pipe'39 pa$es through the hub 40 of aforesaid spider 41, the medial portion of the pipe being preferably at the hub so that portions of the pipe of approximately equal length extend respectively to opposite go sides of the spider. This the tip end of the burner inwardly of the extension 42 in line with the fire box opening 52. The purpose of this arrangement will also clearly appear hereinafter. Mounted to slide on the exposed or external portion of the pipe 39 is a circular damper 54 havinga hub 55 carryin a set screw 56 engageable with the pipe to efinitely or securely hold the damper in its position of adjustment with respect to the outer open end of the extension 42. This damper is rovided with a lining 57 of asbestos. whic is adapted to seat against the outer edge of the extension 42 when the dam r is fully closed. The damper carries han es 58 by means of, which it can be moved conve 'entl by hand. Formedinthe damper are pe p -ho es 59 normally covered by swinging closures 60 which may be easily moved to open position in order that the operation of m the burner may be observed from outside the furnace.

Mounted toslide upon the inner portion of the pipe 39 is. a concavo-convex damper 60 having its concave side facin the fire box opening 52. The diameter 0 the fire box opening is greater than that of the'damper 60. As one illustration of desirable proportions of these parts, the diameter of the opening 52 should measure in practice in certain types of furnaces 18 inches and the diameter of the damper 60 approximately fifteen inches. This always defines a circular space between the marginal edge of said damper 60 and the walls of the opening 52. This damper 60 is provided with a hub 61 which may be secured to the pipe 39 by a set screw 62. The hub has a portion 63 bounded by the concave face of the damper 60 and supported therefrom is a member 63 of a substantially similar shape as that of the damper 60. The purpose of this member 63 is to guard the damper 60 against the action of excessive heat of the flame so that it will not be prematurely destroyed or burnt out. The member 63 is disposed in front of draft openings 64 arranged in a circular series around the'damper 60 and disposed medially thereof, whereby a direct line of suction is created between the center portion of the damper 60 and the outer open end of the extension 42. The openings 64 aside from causing the proper amount of draft to be supplied at the tip of the burner serves to constantly cause cool outside air to move directly through the damper 60 to keep the same at a lower temperature than is otherwise possible. The hub of the damper 60 embraces the inner end of pipe 39 and said end is disposed axially of the damper 60 and mating member 63. The damper 60 is provided with rods 65 which pass'through the damper 54 so as to freely slide therein and the free end of these rods,

forwardly of said damper 54 are provided with handles 66. This permits the damper 60 to be controlled from a point outside the furnace.

The arch is in open communication with the lower portion of the shell 67 of the furnace and as illustrated the space 68 between the arch and the shell opens at 69 at a point under the damper 60. This provides for a rear under draft and serves to protect the furnace keelson to permit air to be drawn off but from under the arch of the furnace and into the fire box opening.

In the form shown in Figure 4, the furnace is of the natural draft Scotch marine type provided with a brick ring 70 which extends around the fire box opening of the furnace. The remaining features of this form of the invention are the same as previously described herein.

What is claimed as new is In an oil burning apparatus, an 0 en ended member adapted to be secured to a urnaee in a line with the fire box opening thereof, a concavo-convex damper movably mounted for adjustment with respect to one side of the fire box opening, a second damper controlling the open ended member and adjustable with relation thereto to form a draft opening between the furnace and the second damper, a burner structure carryin both dampers and having its burner end concave face of the conc'avo-convex damper which is provided with a series of openings, and a substantially concavo-convex guard member having its convexed face mounted against the concave face of said damper in a manner whereby said guard member is disposed in the path of air from the series of openings.

In testimony whereof I have affixed my signature.

EARLE I. STAPLES.

isposed within the 

